withheld) and furnished at Lessee's sole expense to the effect that there is a meritorious basis for contesting such claim; and (T) if an Event of Default shall have occurred and be continuing, Lessee shall have, at the option of the Indemnitee, either (i) provided security for its obligation hereunder reasonably satisfactory to the Indemnitee by placing in escrow sufficient funds to cover any such contested Tax or otherwise provided satisfactory provisions for payment or (ii) paid such Tax. If any Indemnitee shall obtain a refund of all or any part of any Tax paid by Lessee, such Indemnitee shall pay Lessee, but not before Lessee shall have made all payments theretofore due to such Indemnitee pursuant to Section 10(a) an amount equal to the Lessor of (X) the amount of such refund, including interest received attributable thereto, and (Y) such Tax payment by Lessee to such Indemnitee plus any other payment by Lessee to such Indemnitee theretofore made pursuant